CN110425274A - A kind of automatic gear-box built-in electronic shift hydraulic system and its control method - Google Patents
A kind of automatic gear-box built-in electronic shift hydraulic system and its control method Download PDFInfo
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- CN110425274A CN110425274A CN201910708209.6A CN201910708209A CN110425274A CN 110425274 A CN110425274 A CN 110425274A CN 201910708209 A CN201910708209 A CN 201910708209A CN 110425274 A CN110425274 A CN 110425274A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000446 fuel Substances 0.000 claims abstract description 32
- 239000003921 oil Substances 0.000 claims description 208
- 238000013016 damping Methods 0.000 claims description 23
- 239000010720 hydraulic oil Substances 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 7
- 239000012208 gear oil Substances 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 4
- 230000002452 interceptive effect Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 239000002828 fuel tank Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims 1
- 230000002708 enhancing effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/2807—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted using electric control signals for shift actuators, e.g. electro-hydraulic control therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3408—Locking or disabling mechanisms the locking mechanism being moved by the final actuating mechanism
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention discloses a kind of automatic gear-box built-in electronic shift hydraulic system and its control method, the hydraulic system includes D/N/R gearshift, shift electronic control valve, executing agency, fuel supply chamber and oil circuit；The D/N/R gearshift includes valve body, shift spool, limit spool, spring and end plug；The limit spool has left and right two working positions；The shift spool has the working position of left, center, right three, respectively corresponds R, N, D gear；The shift electronic control valve includes electromagnetic switch valve A, electromagnetic switch valve B；When being linked into D gear, electromagnetic switch valve A is closed；When being linked into N gear, electromagnetic switch valve A and electromagnetic switch valve B are opened；When being linked into R gear, electromagnetic switch valve A is opened, and electromagnetic switch valve B is closed；It realizes automatic D/N/R shift, improves navigation automation degree, reduce volume, reduce cost, enhancing shift reliability.
Description
Technical field
The present invention relates to automatic gearbox of vehicles technical field more particularly to a kind of automatic gear-box built-in electronic shift liquid
Pressure system and its control method.
Background technique
Current most of stepless gearbox automatic catch automobiles are all shifted gears using mechanical control, it is still necessary to driver behaviour
Vertical gear lever carries out the switching of P, R, N, D gear.This mode also requires arrangement space, and to the driving technology of driver
It is required that also relatively high.With the raising of automotive automation technology, mechanical gear shifting structure is difficult to meet vehicle intellectualized and user
The premise of the technical applications such as demand, automatic parking and automatic Pilot is that vehicle has electric gear change function.Do not changing gearbox
In the case of internal structure, increasing external electric gear change mechanism also may be implemented the automatic gear change function of automobile, but there is still a need for one
Fixed driving space is arranged, inflexible；And built-in electronic gearshift is used, conducive to the assembly of interior space, but still need to
Reduce the space hold in transmission internal.The integrated form multi-way valve that existing most electric gear change mechanism uses is tied in series and parallel
Box-like oil circuit is unfavorable for the mechanical self-latching function of oil circuit, is easy to appear shift shock, poor reliability, and multi-way valve oil circuit and uses
Multiple solenoid valves, oil circuit connection is complicated, at high cost.
Summary of the invention
(1) technical problems to be solved
Based on the above issues, the present invention provides a kind of automatic gear-box built-in electronic shift hydraulic system and its controlling party
Method realizes automatic shifting, reduces volume, reduces cost, improves navigation automation degree, enhances reliability.
(2) technical solution
Based on above-mentioned technical problem, the present invention provides a kind of automatic gear-box built-in electronic shift hydraulic system, including
D/N/R gearshift, shift electronic control valve, executing agency, fuel supply chamber and oil circuit；The D/N/R gearshift include valve body,
The shift spool to form at least one seal section and limit spool, spring and end plug are matched with valve body；The inner cavity of the valve body
It is provided with the stepped hole of three-level different-diameter, is gradually reduced from left to right, for cooperating the spool of different-diameter to play position-limiting action,
If there are three oil inlet, two oil outlets, two oil return openings and two drain taps；The limit spool is what two cylinders connected
Structure, the effective area of left end face are greater than the effective area of right end face, there is left and right two working positions；The shift spool
There is the working position of left, center, right three；The shift electronic control valve includes electromagnetic switch valve A, electromagnetic switch valve B；The execution machine
Structure includes executing agency one and executing agency two；The fuel supply chamber includes switch valve fuel supply chamber, parking control oil pocket, clutch control
Liquefaction chamber；
Switch valve fuel supply chamber connects the oil inlet end of electromagnetic switch valve A and electromagnetic switch valve B, and electromagnetic switch valve A and electromagnetism are opened
The oil outlet for closing valve B is separately connected oil inlet one and oil inlet two on valve body, and parking controls oil pocket and clutch control oil pocket
The oil inlet three on valve body is connected after filter, oil outlet one connects oil return opening one and executing agency one, and oil outlet two connects
Oil return opening two and executing agency two are provided with damping hole on the feedback oil circuit at the oil return opening one and oil return opening two；Two
Drain tap connects fuel tank.
Preferably, the executing agency one is that D keeps off clutch, and executing agency two is that R keeps off clutch.
Preferably, the shift electronic control valve is connect with man-machine interactive platform, the man-machine interactive platform be button,
Knob or panel.
Further, three states of the shift hydraulic system are as follows:
When D/N/R gearshift is linked into D gear, electromagnetic switch valve A is closed, and shift spool is located at right position, oil inlet three and
Oil outlet one is connected to, and oil inlet three is not connected to oil outlet two, and oil outlet two is connected to drain tap two；
When D/N/R gearshift is linked into N gear, electromagnetic switch valve A and electromagnetic switch valve B are opened, and limit spool is located at
Right position, shift spool are located at middle position, and oil inlet three is not connected to oil outlet one, oil outlet two, oil outlet one and drain tap one,
Oil outlet two is connected to drain tap two；
When D/N/R gearshift is linked into R gear, electromagnetic switch valve A is opened, and electromagnetic switch valve B is closed, and limit spool is located at
Left position, shift spool are located at left position, and oil inlet three is connected to oil outlet two, and oil inlet three is not connected to oil outlet one, oil outlet
One is connected to drain tap one.
Further, automatic gear-box built-in electronic shift hydraulic system is integrated in inside hydraulic valve assembly.
A kind of autonomous driving vehicle electrodeless variable-speed box assembly, including the automatic gear-box built-in electronic shift hydraulic system.
A kind of control method of automatic gear-box built-in electronic shift hydraulic system, the control method include:
S1, the gear being linked into according to D/N/R gearshift execute step S2.1 or S2.2 or S2.3；
S2.1, when D/N/R gearshift be linked into D gear when, electromagnetic switch valve A close, spring make shift gears spool be located at right position,
Oil inlet three is connected to oil outlet one, and oil inlet three is not connected to oil outlet two, and oil outlet two is connected to drain tap two, works as clutch
When device control oil pocket has oil pressure, hydraulic oil makes D gear clutch engagement, and vehicle enters D gear, and hydraulic oil is through damping hole, oil return opening
One reflux gives the active force of shift spool to the right, forms self-lock mechanism；
S2.2, when D/N/R gearshift be linked into N gear when, electromagnetic switch valve A and electromagnetic switch valve B are opened, switch valve supply
Oil pocket fuel feeding makes limit spool be shifted to the right to right position to oil inlet two, and switch valve fuel supply chamber fuel feeding to oil inlet one makes a spool left side of shifting gears
It moves, since limit spool plays position-limiting action, shift spool moves left to middle position, and oil inlet three and oil outlet one, oil outlet two are equal
It is not connected to, oil outlet one is connected to drain tap one, oil outlet two with drain tap two, and vehicle enters N gear；
S2.3, when D/N/R gearshift be linked into R gear when, electromagnetic switch valve B close, electromagnetic switch valve A open, limit valve
Core is located at left position, and switch valve fuel supply chamber fuel feeding to oil inlet one makes shift spool move left to left position, oil inlet three and oil outlet two
Connection, oil inlet three are not connected to oil outlet one, and oil outlet one is connected to drain tap one, when clutch control oil pocket has oil pressure
When, hydraulic oil makes R gear clutch engagement, and vehicle enters R gear, and hydraulic oil flows back through damping hole, oil return opening two, gives shift spool
Active force to the left forms self-lock mechanism.
Further, the control method further include:
When switching to other gears from D gear or R gear, the hydraulic oil of reflux through corresponding oil return opening, damping hole, oil outlet,
Drain tap draining, for the hydraulic oil at clutch through corresponding oil outlet, drain tap draining, damping hole controls draining speed, reduces
The disengagement speed of clutch.
Further, change the diameter of the damping hole, buffering effect can be changed.
(3) beneficial effect
Above-mentioned technical proposal of the invention has the advantages that
(1) present invention is controlled using built-in electronic shift hydraulic system using electronic signal, realizes automatic D/N/R shift
Switching, eliminates mechanical gear lever, to reduce compartment occupied space, interior space arrangement is more convenient, navigation automation journey
Degree improves, lower to the driving demand of driver；
(2) present invention employs self-lock mechanisms, when vehicle being made to be linked into D gear and R gear, even if switch electromagnetic valve A or switch electricity
When magnet valve B fails, vehicle is also able to maintain former gear, and enhancing shift reliability improves safety；
(3) damping hole is used at oil return opening of the invention, and the draining speed of hydraulic oil is controlled by damping hole, makes clutch
Device will not disengage immediately, effectively buffer back gear impact, make to drive more comfortable；
(4) present invention can change buffering effect, to meet different operating condition occasions by the diameter of change damping hole
Mechanical, electrical, liquid jointly controls demand；
(5) built-in electronic of the invention shift hydraulic system can be integrated in inside hydraulic valve assembly, integrated structure
Design is conducive to integrated machine-shaping, guarantees that compact overall structure, oil circuit design are simple, convenient for layout in gearbox, and
Cost is lower；
(6) in D, N, R gear, it is linked into the time general longest of D gear, the present invention is when being linked into D gear, two solenoid valves not work
Make, without powering to solenoid valve, reduces oil consumption, save the cost.
Detailed description of the invention
The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, and attached drawing is schematically without that should manage
Solution is carries out any restrictions to the present invention, in the accompanying drawings:
Fig. 1 is that the D of shift hydraulic system of the embodiment of the present invention keeps off structural schematic diagram；
Fig. 2 is that the N of shift hydraulic system of the embodiment of the present invention keeps off structural schematic diagram；
Fig. 3 is that the R of shift hydraulic system of the embodiment of the present invention keeps off structural schematic diagram；
In figure: 1: switch valve fuel supply chamber；2: parking controls oil pocket；3: oil outlet two；4: clutch control oil pocket；5: fuel-displaced
Mouth one；6: electromagnetic switch valve A；7: shift spool；8: oil return opening two；9:D keeps off clutch；10:R keeps off clutch；11: drain tap
Two；12: oil return opening one；13: limit spool；14: electromagnetic switch valve B；15: valve body；16: end plug；17: oil inlet one；18: oil inlet
Mouth two；19: oil inlet three；20: drain tap one.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
A kind of automatic gear-box built-in electronic is shifted gears hydraulic system, including D/N/R gearshift, shift electronic control valve,
Executing agency, fuel supply chamber and oil circuit；The D/N/R gearshift includes valve body 15, with valve body 15 matches to form at least one
The shift spool 7 and limit spool 13, spring and end plug of seal section；The inner cavity of the valve body 15 is provided with 3 grades of different-diameters
Stepped hole is gradually reduced from left to right, for cooperating the spool of different-diameter to play position-limiting action, is equipped with oil inlet 1, oil inlet
Mouth 2 18, oil inlet 3 19, oil outlet 1, oil outlet 23, oil return opening 1, oil return opening 28, drain tap 1 and drain tap
2 11；The limit spool 13 is the structure that two cylinders connect, and the effective area of left end face is greater than the effective of right end face
Area has left and right two working positions；The shift spool 7 has the working position of left, center, right three, respectively corresponds R, N, D gear；It is described
Electronic control valve of shifting gears includes electromagnetic switch valve A6, electromagnetic switch valve B 14；The executing agency includes D gear clutch and R gear
Clutch；The fuel supply chamber includes switch valve fuel supply chamber 1, parking control oil pocket 2, clutch control oil pocket 4；
Switch valve fuel supply chamber 1 connect electromagnetic switch valve A6 and electromagnetic switch valve B 14 oil inlet end, electromagnetic switch valve A6 and
The oil outlet of electromagnetic switch valve B 14 is separately connected oil inlet 1 and oil inlet 2 18, and parking controls oil pocket 2 and clutch control
Liquefaction chamber 4 connects oil inlet 3 19 after filter, and oil outlet 1 connects oil return opening 1 and D keeps off clutch 9, oil outlet 23
It connects oil return opening 28 and R keeps off clutch 10, be provided with resistance on the feedback oil circuit at the oil return opening 1 and oil return opening 28
Buddhist nun hole, two drain taps 11 connect fuel tank.
Three states of the hydraulic system are as follows:
When D/N/R gearshift is linked into D gear, as shown in Figure 1, electromagnetic switch valve A6 is closed, electromagnetic switch valve B14 is opened
Or close, shift spool 7 is located at right position, and limit spool 13 is located at left position or right position, and oil inlet 3 19 is connected to oil outlet 1,
Oil inlet 3 19 is not connected to oil outlet 23, and oil outlet 23 is connected to drain tap 2 11；
When D/N/R gearshift is linked into N gear, as shown in Fig. 2, electromagnetic switch valve A6 and electromagnetic switch valve B14 are opened,
Limit spool 13 is located at right position, and shift spool 7 is located at middle position, and oil inlet 3 19 is not connected to oil outlet 1, oil outlet 23,
Oil outlet 1 is connected to drain tap 1, oil outlet 23 with drain tap 2 11；
When D/N/R gearshift is linked into R gear, as shown in figure 3, electromagnetic switch valve A6 is opened, electromagnetic switch valve B14 is closed
It closes, limit spool 13 is located at left position, and shift spool 7 is located at left position, and oil inlet 3 19 is connected to oil outlet 23, oil inlet 3 19
It is not connected to oil outlet 1, oil outlet 1 is connected to drain tap 1.
The automatic gear-box built-in electronic shift hydraulic system is integrated in inside hydraulic valve assembly.
A kind of autonomous driving vehicle electrodeless variable-speed box assembly, including the automatic gear-box built-in electronic shift hydraulic system.
The control method of built-in electronic shift hydraulic system of the present invention is as follows:
S1, the gear being linked into according to D/N/R gearshift execute step S2.1 or S2.2 or S2.3；
S2.1, when D/N/R gearshift is linked into D gear, as shown in Figure 1, electromagnetic switch valve A6 is closed, spring makes shift valve
Core 7 is located at right position, and oil inlet 3 19 is connected to oil outlet 1, and oil inlet 3 19 is not connected to oil outlet 23, oil outlet 23 with
Drain tap 2 11 is connected to, and when clutch control oil pocket 4 has oil pressure, hydraulic oil engages D gear clutch 9, and vehicle enters D gear,
And hydraulic oil flows back through damping hole, oil return opening 1, gives the active force of shift spool 7 to the right, forms self-lock mechanism；
At this point, no matter electromagnetic switch valve B14 is opened or closed, limit spool 13 is located at left position or right position, will not all exchange
Gear spool 7 plays position-limiting action；
S2.2, when D/N/R gearshift be linked into N gear when, as shown in Fig. 2, electromagnetic switch valve A6 and electromagnetic switch valve B14 are equal
It opens, 1 fuel feeding of switch valve fuel supply chamber to oil inlet 2 18 makes limit spool 13 be shifted to the right to right position, and 1 fuel feeding of switch valve fuel supply chamber arrives
The spool 7 that makes to shift gears of oil inlet 1 moves to left, and since limit spool 13 plays position-limiting action, makes to shift gears during spool 7 can only move left to
Position, oil inlet 3 19 is not connected to oil outlet 1, oil outlet 23, oil outlet 1 and drain tap 1, oil outlet 23 and
Drain tap 2 11 is connected to, and vehicle enters N gear；
Due to limit spool 13 left end face effective area be greater than right end face effective area, when both sides of the face all
When having fuel feeding, the active force to the right that left end face is subject to is greater than the active force to the left that right end face is subject to, therefore, limit valve
Core 13 can be shifted to the right to right position.
S2.3, when D/N/R gearshift be linked into R gear when, as shown in figure 3, electromagnetic switch valve B14 close, electromagnetic switch valve
A6 is opened, and limit spool 13 is located at left position, and 1 fuel feeding of switch valve fuel supply chamber to oil inlet 1 makes shift spool 7 move left to left position,
Oil inlet 3 19 is connected to oil outlet 23, and oil inlet 3 19 is not connected to oil outlet 1, and oil outlet 1 and drain tap 1 connect
Logical, when clutch control oil pocket 4 has oil pressure, hydraulic oil engages R gear clutch 10, and vehicle enters R gear, and hydraulic oil is through hindering
Buddhist nun hole, oil return opening 28 flow back, and give the active force of shift spool 7 to the left, form self-lock mechanism.
When switching to other gears from D gear, the hydraulic oil of reflux is through corresponding oil return opening 1, damping hole, oil outlet one
5, one 20 draining of drain tap, D keep off the hydraulic oil at clutch 9 through corresponding oil outlet 1, one 20 draining of drain tap；It is cut from R gear
When shifting to other gears, the hydraulic oil of reflux through corresponding oil return opening 28, damping hole, oil outlet 23,2 11 draining of drain tap,
R keeps off the hydraulic oil at clutch 10 through corresponding oil outlet 23,2 11 draining of drain tap；Damping hole controls hydraulic oil draining speed
Degree, reduce the disengagement speed of clutch, i.e. clutch will not disengage immediately, thus realize clutch be detached from when draining speed can
By control, gear impact is effectively buffered back, increases shift reliability.In addition, can be changed slow by the diameter for changing damping hole
Rush effect.
In summary, pass through a kind of above-mentioned automatic gear-box built-in electronic shift hydraulic system and its control method, tool
It has the following advantages:
(1) present invention is controlled using built-in electronic shift hydraulic system using electronic signal, realizes automatic D/N/R shift
Switching, eliminates mechanical gear lever, to reduce compartment occupied space, interior space arrangement is more convenient, navigation automation journey
Degree improves, lower to the driving demand of driver；
(2) present invention employs self-lock mechanisms, when vehicle being made to be linked into D gear and R gear, even if switch electromagnetic valve A or switch electricity
When magnet valve B fails, vehicle is also able to maintain former gear, and enhancing shift reliability improves safety；
(3) damping hole is used at oil return opening of the invention, and the draining speed of hydraulic oil is controlled by damping hole, makes clutch
Device will not disengage immediately, effectively buffer back gear impact, make to drive more comfortable；
(4) present invention can change buffering effect, to meet different operating condition occasions by the diameter of change damping hole
Mechanical, electrical, liquid jointly controls demand；
(5) built-in electronic of the invention shift hydraulic system can be integrated in inside hydraulic valve assembly, integrated structure
Design is conducive to integrated machine-shaping, guarantees that compact overall structure, oil circuit design are simple, convenient for layout in gearbox, and
Cost is lower；
(6) in D, N, R gear, it is linked into the time general longest of D gear, the present invention is when being linked into D gear, two solenoid valves not work
Make, without powering to solenoid valve, reduces oil consumption, save the cost.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Embodiments of the present invention are described in conjunction with the accompanying, but those skilled in the art can not depart from spirit and model of the invention
Various modifications and variations are made in the case where enclosing, such modifications and variations each fall within the range being defined by the appended claims
Within.
Claims (9)
- The hydraulic system 1. a kind of automatic gear-box built-in electronic is shifted gears, which is characterized in that including D/N/R gearshift, shift electricity Sub- control valve, executing agency, fuel supply chamber and oil circuit；The D/N/R gearshift includes valve body, with valve body matches to be formed at least The shift spool and limit spool, spring and end plug of one seal section；The inner cavity of the valve body is provided with three-level different-diameter Stepped hole is gradually reduced from left to right, for cooperating the spool of different-diameter to play position-limiting action, if there are three oil inlets, two Oil outlet, two oil return openings and two drain taps；The limit spool is the structure that connects of two cylinders, left end face it is effective Area is greater than the effective area of right end face, there is left and right two working positions；The shift spool has the work of left, center, right three Position；The shift electronic control valve includes electromagnetic switch valve A, electromagnetic switch valve B；The executing agency includes one He of executing agency Executing agency two；The fuel supply chamber includes switch valve fuel supply chamber, parking control oil pocket, clutch control oil pocket；Switch valve fuel supply chamber connects the oil inlet end of electromagnetic switch valve A and electromagnetic switch valve B, electromagnetic switch valve A and electromagnetic switch valve B Oil outlet be separately connected oil inlet one and oil inlet two on valve body, parking controls oil pocket and clutch control oil pocket through filtering The oil inlet three on valve body is connected after device, oil outlet one connects oil return opening one and executing agency one, and oil outlet two connects oil return opening Two and executing agency two, damping hole is provided on the feedback oil circuit at the oil return opening one and oil return opening two；Two drain taps Connect fuel tank.
- The hydraulic system 2. a kind of automatic gear-box built-in electronic according to claim 1 is shifted gears, which is characterized in that described to hold Row mechanism one is that D keeps off clutch, and executing agency two is that R keeps off clutch.
- The hydraulic system 3. a kind of automatic gear-box built-in electronic according to claim 1 is shifted gears, which is characterized in that described to change Gear electronic control valve is connect with man-machine interactive platform, and the man-machine interactive platform is button, knob or panel.
- The hydraulic system 4. a kind of automatic gear-box built-in electronic according to claim 1 or 3 is shifted gears, which is characterized in that should Three states of hydraulic system of shifting gears are as follows:When D/N/R gearshift is linked into D gear, electromagnetic switch valve A is closed, and shift spool is located at right position, oil inlet three with it is fuel-displaced Mouth one is connected to, and oil inlet three is not connected to oil outlet two, and oil outlet two is connected to drain tap two；When D/N/R gearshift is linked into N gear, electromagnetic switch valve A and electromagnetic switch valve B are opened, and limit spool is located at right position, Shift spool is located at middle position, and oil inlet three is not connected to oil outlet one, oil outlet two, oil outlet one and drain tap one, fuel-displaced Mouth two is connected to drain tap two；When D/N/R gearshift is linked into R gear, electromagnetic switch valve A is opened, and electromagnetic switch valve B is closed, and limit spool is located at a left side Position, shift spool are located at left position, and oil inlet three is connected to oil outlet two, and oil inlet three is not connected to oil outlet one, oil outlet one It is connected to drain tap one.
- The hydraulic system 5. a kind of automatic gear-box built-in electronic according to claim 1 is shifted gears, which is characterized in that described Automatic gear-box built-in electronic shift hydraulic system is integrated in inside hydraulic valve assembly.
- 6. a kind of autonomous driving vehicle electrodeless variable-speed box assembly, which is characterized in that including it is according to any one of claims 1 to 5 from Dynamic gearbox built-in electronic shift hydraulic system.
- 7. a kind of a kind of control of automatic gear-box built-in electronic shift hydraulic system according to any one of claims 1-5 Method processed, which is characterized in that the control method includes:S1, the gear being linked into according to D/N/R gearshift execute step S2.1 or S2.2 or S2.3；S2.1, when D/N/R gearshift be linked into D gear when, electromagnetic switch valve A close, spring make shift gears spool be located at right position, oil inlet Mouth three is connected to oil outlet one, and oil inlet three is not connected to oil outlet two, and oil outlet two is connected to drain tap two, when clutch control When liquefaction chamber has oil pressure, hydraulic oil makes D gear clutch engagement, and vehicle enters D gear, and hydraulic oil is returned through damping hole, oil return opening one Stream gives the active force of shift spool to the right, forms self-lock mechanism；S2.2, when D/N/R gearshift be linked into N gear when, electromagnetic switch valve A and electromagnetic switch valve B are opened, switch valve fuel supply chamber Fuel feeding makes limit spool be shifted to the right to right position to oil inlet two, and switch valve fuel supply chamber fuel feeding to oil inlet one moves to left shift spool, Since limit spool plays position-limiting action, shift spool moves left to middle position, and oil inlet three does not connect with oil outlet one, oil outlet two Logical, oil outlet one is connected to drain tap one, oil outlet two with drain tap two, and vehicle enters N gear；S2.3, when D/N/R gearshift be linked into R gear when, electromagnetic switch valve B close, electromagnetic switch valve A open, limit spool position In left position, switch valve fuel supply chamber fuel feeding to oil inlet one makes shift spool move left to left position, and oil inlet three is connected to oil outlet two, Oil inlet three is not connected to oil outlet one, and oil outlet one is connected to drain tap one, hydraulic when clutch control oil pocket has oil pressure Oil makes R gear clutch engagement, and vehicle enters R gear, and hydraulic oil flows back through damping hole, oil return opening two, to the left to shift spool Active force forms self-lock mechanism.
- 8. a kind of control method of automatic gear-box built-in electronic shift hydraulic system according to claim 7, feature It is, the control method further include:When switching to other gears from D gear or R gear, the hydraulic oil of reflux is through corresponding oil return opening, damping hole, oil outlet, draining Mouthful draining, for the hydraulic oil at clutch through corresponding oil outlet, drain tap draining, damping hole controls draining speed, reduces clutch The disengagement speed of device.
- 9. a kind of control method of automatic gear-box built-in electronic shift hydraulic system according to claim 8, feature It is, changes the diameter of the damping hole, buffering effect can be changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN111336245A (en) * | 2020-04-01 | 2020-06-26 | 泸州容大智能变速器有限公司 | Main pressure self-adaptive control system and gearbox assembly thereof |
| CN112483560A (en) * | 2020-10-21 | 2021-03-12 | 北方汤臣传动科技有限公司 | Emergency gear shifting system of hydraulic automatic gearbox |
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